Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Energy diagram and power output graphs for the E.A.C.1 engine, with comparison to the 40-50 R.R. engine.

Identifier  ExFiles\Box 72\4\  scan0332
Date  14th November 1923
  
ENERGY DIAGM FOR E.A.C.1. ENGINE.
COMP. RATIO 4.6.
KNAVE CARB. [ADJ. FOR EACH SPEED]
FUEL SHELL HEX. S.G. .759
CAL.{Mr Calvert} VAL. (LOWER) 19000 B.Th.U/lb

% OF INITIAL HEAT ENERGY.
LOSSES TO:-
JACKET WATER
EXHAUST RADIATION AND PUMPING.
PISTON POWER.
FRICTION.
EFFECTIVE THERMAL EFFCY.
EFFECTIVE MOTOR POWER.
R.P.M.

POWER OUTPUT OF E.A.C.1. ENGINE & STD. 40-50 R.R.
B.H.P.
B.H.P. E.A.C. COMP RATIO 4.6.
B.H.P. 40-50 R.R. COMP RATIO 3.97.

NOTE:
2000 R.P.M. IS NOT THE SPEED OF MAX POWER OUTPUT FOR E.A.C. ENGINE, THE PEAK OF THE POWER CURVE IS ABOUT 2300 R.P.M.

STD 40-50 R.R.
E.A.C.1.
CONSUMPTION. PTS/BHP/HOUR.
R.P.M.
LLH
14-11-23.
  
  


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